朱家尖潮间带底栖海藻分布特征  

Distribution Characteristics of Benthic Algae in Intertidal Zone of Zhujiajian of Zhejiang Province

作　　者：毛欣欣[1] 蒋霞敏[1] 傅财华[1] 

机构地区：[1]宁波大学生命科学与生物工程学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2011年第2期31-36,共6页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家教育部项目(GJTSZY200701);宁波市科技重点项目(2008C50027)

摘　　要：2008年5月至2009年2月对浙江舟山朱家尖情人岛潮间带的大型海藻进行了调查,初步查明该潮间带大型海藻的组成、分布和温度属性,并利用相似性指数(Sc)分析了调查海域潮间带大型海藻相似性值.结果表明:采集到的34种海藻隶属3门23属,其中绿藻门(Chlorophyta)7属8种,红藻门(Rhodophyta)14属20种,褐藻门(Phaeophyta)6属6种.春季主要优势种为铁钉菜(Ishige okamura)、孔石莼(Ulva pertusa)、小杉藻(Gigartina intermedia);夏季为铁钉菜、羊栖菜(Sargassum fusiforme)、小石花菜(Gelidium divaricatum)等;秋、冬季节为铁钉菜.红藻门种类在调查海域的出现频率为58.8%,为优势门类;绿藻门种类在该海域的总体水平分布呈均匀状态.70.6%的调查种类分布在低潮带,其中包括一些中潮带延伸种类,中、低潮带的海藻组成相似性值为0.36,并且中、低潮带的生境趋同效果大于高、中潮带.朱家尖潮间带大型海藻具有明显的垂直分带现象,温水性种类占绝对优势,优势种多为暖温性种.Based on the survey of macro-algae in the intertidal zone of Island Qingrendao of Zhujiajian Zhejiang province from May 2008 to April 2009,the algal species composition,distribution,and temperature feature are investigated.The algal similarity in the sampled areas is preliminarily analyzed using similarity indices（Sc）.A total of 34 species sampled in sublittoral area are identified,among which,8 species of 7 genera belong to Chlorophyta,20 species of 14 genera belong to Rhodophyta,and 6 species of 6 genera are categorized into Rhodophyta.The dominant species in the spring are Ishige okamurai,Ulva pertusa,and Gigartina intermedia;in summer,Ishige okamurai,Sargassum fusiorme,and Gelidium divaricatum;in autumn and winter,Ishige okamurai.Rhodophyta are the dominant species,with the occurring frequency being up to 58.8% and Chlorophyta showing quite uniformed horizontal distribution.In addition,70.6% of sampled species are from low-tide zone,and some were extended from mid-tide zone to low-tide zone.The composition comparability between mid-tide and low-tide species is found to be 0.36,and the convergence effect in mid-tide and low-tide zone is higher than that in high-tide and mid-tide zone.The sublittoral area of Zhujiajian shows obvious vertical zoning character,with temperate species being abundant,and the warm-water species dominant.

关 键 词：大型海藻 季节变化 种类组成 垂直分布 

分 类 号：Q145[生物学—生态学] Q178.53[生物学—普通生物学]